Engine Harmonic Balancer For Chevy Camaro Pontiac GTO Firebird V8 5.7L 12553118

Engine Harmonic Balancer for Chevy Camaro Pontiac GTO Firebird V8 5.7L

This engine harmonic balancer replaces OEM reference 12553118 and mounts on the front of the crankshaft to damp torsional vibration and drive the accessory belt on V8 5.7L applications.

Overview

This harmonic balancer is a steel-and-rubber crankshaft damper built to absorb engine vibration and keep the belt drive running true. It suits V8 5.7L Chevy and Pontiac applications where the original pulley has failed or slipped. The balancer cross-references OEM 12553118 so you can match it to the original part.

Built For Performance

• Bonded elastomer ring absorbs crankshaft torsional vibration
• Steel outer ring and hub for stable belt tracking
• Outer pulley grooves drive the accessory belt
• Balanced rotating mass for smooth operation at high rpm
• Built to match OEM 12553118 fitment dimensions

Fits These Machines

• for Chevy Camaro V8 5.7L
• for Pontiac GTO V8 5.7L
• for Pontiac Firebird V8 5.7L

On-The-Job Use

• Replacing a worn or separated factory damper
• Engine rebuilds and drivetrain refreshes
• Restoring correct belt alignment on daily drivers
• Maintenance on older V8 5.7L vehicles

Specs At A Glance

Good To Know

Q: Does a harmonic balancer include the center bolt? A: No, the listing covers the balancer itself, so reuse the original bolt or fit a new one as your service manual specifies.

Q: Can I install a balancer without a puller? A: No, a proper balancer puller and installer are needed to remove and seat the damper without damaging the crankshaft snout.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.